freebsd-skq/sys/dev/ioat/ioat_test.h
cem 15f623b49e ioatcontrol(8): Add and document "raw" testing mode
Allows DMA from/to arbitrary KVA or physical address.  /dev/ioat_test
must be enabled by root and is only R/W root, so this is approximately
as dangerous as /dev/mem and /dev/kmem.

Sponsored by:	EMC / Isilon Storage Division
2015-10-29 04:16:16 +00:00

85 lines
2.4 KiB
C

/*-
* Copyright (C) 2012 Intel Corporation
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
__FBSDID("$FreeBSD$");
#ifndef __IOAT_TEST_H__
#define __IOAT_TEST_H__
enum ioat_res {
IOAT_TEST_OK = 0,
IOAT_TEST_NO_DMA_ENGINE,
IOAT_TEST_NO_MEMORY,
IOAT_TEST_MISCOMPARE,
IOAT_TEST_INVALID_INPUT,
IOAT_NUM_RES
};
enum ioat_test_kind {
IOAT_TEST_FILL = 0,
IOAT_TEST_DMA,
IOAT_TEST_RAW_DMA,
IOAT_NUM_TESTKINDS
};
struct test_transaction;
struct ioat_test {
volatile uint32_t status[IOAT_NUM_RES];
uint32_t channel_index;
enum ioat_test_kind testkind;
/* HW max of 1MB */
uint32_t buffer_size;
uint32_t chain_depth;
uint32_t transactions;
/*
* If non-zero, duration is time in ms;
* If zero, bounded by 'transactions' above.
*/
uint32_t duration;
/* If true, check for miscompares after a copy. */
bool verify;
/* DMA directly to/from some memory address */
uint64_t raw_target;
void *raw_vtarget;
bool raw_write;
bool raw_is_virtual;
/* Internal usage -- not test inputs */
TAILQ_HEAD(, test_transaction) free_q;
TAILQ_HEAD(, test_transaction) pend_q;
volatile bool too_late;
};
#define IOAT_DMATEST _IOWR('i', 0, struct ioat_test)
#endif /* __IOAT_TEST_H__ */